{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-52988", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.376Z", "datePublished": "2026-06-24T16:29:02.580Z", "dateUpdated": "2026-10-03T10:55:33.999Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:55:33.999Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: join hook list via splice_list_rcu() in commit phase\n\nPublish new hooks in the list into the basechain/flowtable using\nsplice_list_rcu() to ensure netlink dump list traversal via rcu is safe\nwhile concurrent ruleset update is going on." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Reachability is through nfnetlink/nftables netlink operations (`NFT_MSG_NEWCHAIN`/`NEWFLOWTABLE` and concurrent `GETCHAIN`/`GETFLOWTABLE` dumps), which require local ability to send netlink messages.\nAC:L - The bug is a race between an attacker-controlled ruleset update and an attacker-controlled concurrent RCU dump; both sides can be generated repeatedly from local processes.\nPR:L - nfnetlink checks `CAP_NET_ADMIN` in the target network namespace, and nftables/netfilter administration is reachable from unprivileged users via user+network namespaces on affected configurations.\nUI:N - No victim interaction is required; the attacker triggers both the update and dump operations directly.\nS:U - The impact remains within the kernel/local host security authority and does not cross a VM, IOMMU, or separate security-scope boundary.\nC:H - Unsafe non-RCU list publication can make an RCU netlink dump interpret a transaction list head or freed transaction memory as `struct nft_hook`, leading to out-of-bounds/use-after-free reads returned through netlink hook device-name serialization.\nI:N - The reachable affected dump path reads hook-list entries and serializes names; I did not find a defensible attacker-controlled write or control-flow primitive from this bug.\nA:H - The malformed RCU traversal can dereference invalid/freed memory or loop over an inconsistent list, making kernel oops, panic, or soft lockup a plausible outcome." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/nf_tables_api.c" ], "versions": [ { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "ed8d3bd8272e49ea987100de2abfb13710329a9b", "status": "affected", "versionType": "git" }, { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "8fdd2204503ab1ce07dc000c277e2c3edf96a67b", "status": "affected", "versionType": "git" }, { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "5593c640f9daedec8de61555c41e1019fa675aa6", "status": "affected", "versionType": "git" }, { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "00e370627f2e1fb3585f9d26348b1abddc75442b", "status": "affected", "versionType": "git" }, { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "28ecfb3d1fe8dea70319de7051cb6718c25b5b52", "status": "affected", "versionType": "git" }, { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "a557816c6e38e9473d99aa9ea8c662f55fc85847", "status": "affected", "versionType": "git" }, { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "1346be9379639c30877083b12747d4eacb83c24f", "status": "affected", "versionType": "git" }, { "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981", "lessThan": "a6134e62dba2ea4f760b29d5226907f447c92400", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/nf_tables_api.c" ], "versions": [ { "version": "5.8", "status": "affected" }, { "version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.10.271" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.222" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.18.55" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.0.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ed8d3bd8272e49ea987100de2abfb13710329a9b" }, { "url": "https://git.kernel.org/stable/c/8fdd2204503ab1ce07dc000c277e2c3edf96a67b" }, { "url": "https://git.kernel.org/stable/c/5593c640f9daedec8de61555c41e1019fa675aa6" }, { "url": "https://git.kernel.org/stable/c/00e370627f2e1fb3585f9d26348b1abddc75442b" }, { "url": "https://git.kernel.org/stable/c/28ecfb3d1fe8dea70319de7051cb6718c25b5b52" }, { "url": "https://git.kernel.org/stable/c/a557816c6e38e9473d99aa9ea8c662f55fc85847" }, { "url": "https://git.kernel.org/stable/c/1346be9379639c30877083b12747d4eacb83c24f" }, { "url": "https://git.kernel.org/stable/c/a6134e62dba2ea4f760b29d5226907f447c92400" } ], "title": "netfilter: nf_tables: join hook list via splice_list_rcu() in commit phase", "x_generator": { "engine": "bippy-1.2.0" } } } }